Final answer:
Doug has FDIC insurance coverage of up to $250,000 for his accounts at the bank, which guarantees his deposits if the bank fails.
Step-by-step explanation:
Doug's Federal Deposit Insurance Corporation (FDIC) insurance coverage for his accounts at the bank is up to $250,000 per account category. This means that if the bank were to fail, the FDIC would guarantee the return of Doug's money up to that amount, ensuring financial security for individual depositors. It's noteworthy to mention that this level of deposit insurance was established to prevent bank runs, and since its inception in the 1930s, there have been no losses of insured deposits.